These silica rich depositions are created as hot borehole water is released from the power plants into cooling ponds. As the water cools, dissolved silica comes out of solution forming intricate patterns in and around the volcanic rock.
Selfoss is a waterfall in the river Jökulsá á Fjöllum in the north of Iceland which drops over some waterfalls about 30 km before flowing into Öxarfjörður, a bay of the Arctic Sea.
One of the first farmers in Brimilsvellir was named Brimill and at the same time the farmer Mavur lived in Mavahlid. Those two could not agree on the border of their land and started a serious fight; which actually took place right on that piece of land where you can nowadays find our Brimilsvellir church. Both of them lost their lives during this battle and ever since a curse lies over this piece of land. Nobody is allowed to mow it, lest disaster happen. Almost every farmer so far kept to this rule. Farmer Toggi, who lived in Brimilsvellir, tried to mow the piece of land. While mowing, his tractor sank in a boggy area and could not be removed!